Dean Jones as Fredrick 'Fred' Bolton, a Madison Avenue advertising executive and Lakeville, Connecticut widower, is juggling two big problems at once. He is warned by his boss to come up with an original campaign in just 24 hours to sell Allied Drug & Food's over-the-counter indigestion remedy, Aspercel, a test of creativity that could make or break him. Allied's chairman Tom Dungan, Fred Clark, is pushing for a "jet set" appeal that will give sour stomachs class and dignity, adding pressure to Fred's already precarious financial situation as he struggles to keep up with mounting bills and dwindling stability.
Fred's other problem is his teenage daughter Helen Bolton, a bright and athletic girl who loves horses, takes riding classes, and has already competed in events. Ellen Janov plays Helen Bolton, and she dreams of owning a horse of her own, even though the family cannot afford one and Fred is allergic to horses. This shared longing becomes the spark that could solve both Fred's career crisis and Helen's wish, if the plans can be made to work in harmony.
To bridge business needs with family hopes, Fred conceives a bold plan: acquire a good horse, name it Aspercel, and build a publicity campaign around Helen riding it. The idea is to have the horse win early prizes to become a celebrated figure, thereby generating the kind of public interest that Aspercel’s campaign requires. Fred hires Helen's riding instructor, and in a pivotal turn, enlists a smiling, hopeful teen, Ronny Gardner, Kurt Russell, who quickly becomes infatuated with Helen and lends a hand to the venture.
The operation gains momentum as Suzie, the riding instructor, becomes a key ally. Diane Baker as Suzie recognizes Aspercel's potential and the dramatic value of the horse in public life. She persuades the plan to widen the scope, bringing in Archer Madison, a wealthy equestrian who serves as a trainer. Lloyd Bochner takes on Archer Madison's role, guiding the horse and riders through the demanding world of high-stakes competition.
As the campaign unfolds, Helen wins a few ribbons, helping to establish Aspercel in the public eye, yet the initial publicity falls short of Dungan's lofty expectations. Under the mounting pressure, Helen falters at an important show, a setback that threatens not only the publicity plan but Fred's job security as well. The tension between ambition and responsibility weighs heavily on the family, testing loyalties and resolve.
Amid the strain, Suzie sees a clear moment of potential when Aspercel carries Fred over a seven-foot wall and away from a police car—an audacious feat that proves the horse's extraordinary ability and the duo's growing synergy. This act of courage crystallizes the plan's direction and demonstrates how far teamwork and trust can carry them.
With renewed resolve, Suzie takes the bold step of riding Aspercel herself in the International Horse Show, leveraging her experience and the newly discovered support from Archer Madison as trainer. The competition becomes a close, high-stakes duel with the reigning champion, and in a dramatic finish, Suzie and Aspercel win the championship, delivering the triumph that had seemed improbable just days before.
The victory brings tangible rewards: Fred receives a well-deserved promotion, recognizing his ingenuity and tenacity, while Suzie finds personal fulfillment and a new sense of connection—an outcome that blends professional success with romance and partnership. In the end, what began as a desperate gambit to save a career transforms into a winning collaboration that unites family, ambition, and love in a way that feels earned, sincere, and hopeful.
